Lancet Respir Med.
Heaney LG, Busby J, Hanratty CE, Djukanovic R, Woodcock A, Walker SM, Hardman TC, Arron JR, Choy DF, Bradding P, Brightling CE, Chaudhuri R, Cowan DC, Mansur AH, Fowler SJ, Niven RM, Howarth PH, Lordan JL, Menzies-Gow A, Harrison TW, Robinson DS, Holweg CTJ, Matthews JG, Pavord ID, investigators for the MRC Refractory Asthma Stratification Programme.
doi: 10.1016/S2213-2600(20)30397-0.